Hatch Duo

Hatch Duo Move together, hatch an egg. A co-op fitness game — no install, your friends just scan a QR code. Hatch Duo turns "exercise you can't stick to alone" into a cooperative game with friends and family. ■ The egg only hatches when everyone finishes 2-4 players join a room, and each takes one move: squats, jumps, punches, or high knees. If even one person quits halfway, the egg won't hatch. That's why the moment it does, it belongs to all of you. ■ No install, no sign-up It runs in the browser. Whoever you invite just opens a link — no download, no account. ■ No camera needed Just hold your phone and move. The accelerometer counts your reps. Sensor data is processed on your device and never sent anywhere. ■ Different days are fine You finish today, your partner finishes tomorrow — the egg still hatches. No need to sync schedules. ■ Raise them and keep the record Every hatched buddy gets a birth certificate: the date, who you hatched it with, the move and time it took, and a serial number for being the Nth hatch in the world. Hatch the same buddy again to raise its bond level, unlock equipment, and see its fully equipped form at level 5. ■ Designed not to overuse Up to 3 hatches a day (4 at level 4). You can keep exercising past the limit, but new buddies wait until tomorrow. Available in Japanese, Chinese, and English.